Speaker
Dr
Takehiko Asaka
(Niigata University)
Description
We consider the nuMSM, which is the minimal standard model extended by three right handed neutrinos with masses lighter than the weak scale. In this model, the lightest right-handed neutrino $N_1$ is dark matter of the universe and the other two $N_2$ and $N_3$ are
responsible to the neutrino masses in oscillation experiments
and baryon asymmetry of the universe. In this talk, we would like to explain how to search $N_2$ and $N_3$ in decays of pions and kaons. Especially, we consider the case when their masses are lighter than the pion mass, and show the parameter range
allowed from the various constraints by experiments and cosmology. We also present the implications to the future search experiments
in pion and kaon decays.
Author
Dr
Takehiko Asaka
(Niigata University)
